There are many grades of waste. The Waste Management Program provides guidance for deciding into which category your waste fits. If in doubt after reading the program, feel free to contact University Environmental Health and Safety. Most wastes are hazardous, or close enough to be declared hazardous. The Waste Management Program does list chemicals that can be disposed of in the trash. Most of these are non-toxic salts. Note that no liquids can go into a trash container no matter how non-toxic.
The Waste Management Program also lists liquids that can be diluted and poured down the drain. This is very infrequently done as our sewer guidelines are very restrictive. We place this information here however as a matter of convenience, as you may have a sewerable chemical. Once again, if in doubt, contact University Environmental Health and Safety.
Lastly, we have a category called CCI's, or Chemically Contaminated Items. These are non-hazardous solids (such as contaminated paper towels, glassware, plastic, etc.) that are too contaminated to go in the normal trash, but not contaminated enough to be considered hazardous waste. Place these in a plastic bag (put sharps in a hard plastic container), label with a Wate Chemical Label and contact University Environmental Health and Safety for a pickup.